Recent content by Farky

And nobody catch that error? Very unlikely. Anyway, it was used to make quick correction, nothing absolutely accurate. We can take a look at RAAF instructions how to correct power vs temperature - (from RAAF instructions for R-1340 power curves, 1944) Little bit different from US...

It can be found on various power charts, for example here (top left corner) - http://www.wwiiaircraftperformance.org/mustang/V-1650-7-High-Blower-power-chart.jpg Little bit hard to read, so here is detail from another source -

You are right, you get more power in winter than in summer temperatures. Simple formula is saying that for each 6°C decrease from standard altitude temp. you need to ad 1% hp and subtract 1% hp for each 6°C increase from standard altitude temperature. So for example - power of Jumo 213A at...

Hybrid in my opinion. Fixed wings with four guns in batch AM954 - AM963 are mentioned in Pilot's Notes for Martlet II (AP2031B), at the same time there is not a word about P&W R-1830-76 or -86, only about R-1830 S3C4-G.

Great article, however informations about first batch of Martlet II (10 airplanes with fixed wings, AM954 - AM963) are not quite correct in my opinion. They were not powered by two stage Twin Wasps (R-1830-76) but with single stage version (R-1830-90). Picture of AM958 is showing lack of typical...

Honestly I have no idea. It depends on lot of things - when you have engine available, how much airplanes from initial batch (order) you still need to build at this point etc. I have no clue when was export embargo on Twin Wasp with 2 speed 2 stage supercharger lifted. Great Britain did get...

@ Wild_Bill_Kelso - we can talk for a long time about Spitfires over Darwin, discuss if issue was range, tactic or commander. We can also discuss operation I-Go and other stuff, altitude of air raids and what was happenning there. I can even show you combat reports of Kittyhawks successfuly...

Use of two stage supercharger Twin Wasp in Ozhawk means you need much more time for modification of airplane. So, if we want Ozhawk in units in April 1943, we need to start even sooner than in January 1941. And we are talking most likely about months, not weeks. It took Grumman long time to...

Let's say we want fighter airplane produced in Australia, better than Boomerang, we want this airplane to be in operational squadrons at the same time as Boomerang (April 1943). You need to get a license no later than January 1941 and I am very (I mean VERY) generous here. Why at least one year...

At the time when decision to send Mohawks to South Africa was made (late summer or autumn 1940 I think) SAAF was heavily involved in East African campaign in Kenya and Sudan. They were actually fighting enemy (Italy) and SAAF desperately needed some modern fighter airplanes since they got...

This is hypotetical scenario of course, I am fully aware of RAAF "two seater fighter only" policy before the war with Japan and I even mention it few times in this discusion. Let's asume for a moment that RAAF wanted single seater instead of long range two seaters. It depends what do you...

I am not trying to fight and I am not angry, I am trying to get this thread back on track. If you see that as angry fighting, ok. I am not done with that discussion because I am angry or something, I am done because it leads nowhere, we will just agree to disagree no matter what we will wrote.

Shortround6 is absolutely right. I think what he is saying is that altought impetus for change was in fact coming from the field units, there was procedure before War Emergency Rating was established. Nothing was provisional about WER settings, Allison did not figured out limits for WER, it was...

Typo, obviously, already edited, it should read July 1943 of course. No problem with "What if" scenario at all, it can be fun. I am asking for timeline because I think we need some anchor here or we will jump all over the place from early Hawks 75 to engines with Water injection. If we lay...

Fact that Mohawks did well in India has nothing to do with two-speed supercharger or any performance in high altitude. All encounters with enemy airplanes there were under 10 000 ft, at least in case of Mohawks. Oscar was good fighter, but every Allied airplane in CBI was able to hold it's own...